Door-knob.



W .`SANDERSON.

DOOR KNOB.

APPLICATION FILED NOV. 9,19I5.

l, 1 86,234. vPfvmtented June 6, 1916.

WITNESS IN VEN T05 WILLIAM SANDERSON,.OF NEW YORK, N. Y.

DOOR-KNOB.

Specication of Letters Patent.

Patented June 6, 1916.

Original application led May 6, 1915, Serial No. 26,190. Divided and this application filed November 9,

1915. Serial No. 60,467,

T0 all Iwlw/m it may concern.'

Be it known that I, IVILLIAM SANDnRsoN, a citizen of the United States, and a reside-nt of the borough of Brooklyn, county of Kings, city and State of New York, have invented certain new and useful Improvements in Door-Knobs, ofwhich the following is a specification.

My invention relates to an improved construction of door knobs and means for attaching the knob to the spindle.

One of the objects of the invention is to provide a door knob which is easy and inex-V pensive to construct and which may be readily and permanently attached to the spindle.

Another object is to provide an inexpensive construction by means of which one of the door knobs is fastened to the spindle so that it cannot be removed therefrom when attached to the door, except by first removing the other knob.

Another object is to provide a construction by means of which the door knob is secured to the spindle by means which are entirely hidden from view.

Other objects will appear from the-following specification and claims. p

This application is a continuation and in part a division of the invention disclosed in my application Serial No. 26,190, filed May 6th, 1915.

In the drawings which form a part of this specification; Figure l represents a sectional view of a door knob embodying my invention shown connected to a spindle. Fig. 2 is a side elevation of my door knob mounted upon a spindle. Fig. 3 is a perspective view of a socket embodying one form of my invention. Fig. 4 is a perspective view of the spindle and key used in connection with the construction shown in Fig 3. Fig. 5 is a sectional view on line 55 of Fig. l. Fig. G is a perspective View of the socket and key embodied in another form of my invention. Fig. 7 is a perspective view o-f the socket, spindle and key embodying another form of my invention. Fig. 8 is a side elevation of a door knob with connecting socket, key and spindle embodied in another form of invention, the socket being partially broken away and shown in section. Fig. 9 is a section on line 9-9 of F ig.8. Fig. l0 is a section on line 10-l0- of Fig. 8. Fig. l1 is a longitudinal section of another modification of means for connecting the spindle to the socket. Fig. 12 is a section on line 12-12 of Fig. l1.

Referring to the drawings in which similar reference characters refer to like parts; A is the knob, B the socket, C the spindle and D the ornamental rose plates of usual construction and E is the filling of plastic composition, preferably of a material known as Keenes cement, though hydraulic or any other suitable cement may also be used with advantage.v

The door knob consists of a shell of any suitable metal formed either by rolling, stamping or pressing the metal to force the metal into a die of any suitable construction, so that the metal will take the form of the contour of the die. The knob may be entirely plain as sho-wn in Fig 2 or a portion of the metal is'cut out of the end of the knob to form a hole l0 of any suitable dimension, form and shape as shown in Fig. 1. 1

The socket is formed either of a suitable integral piece of metal or else it is formed of an alloy provided at the open end thereof with a hollow tubing composed of another metal. The closed end of the socket is preferably provided with fiat sides as at 11, the preferred form being rectangular in cross section.. This end may be roughened or scarred or made into any shape other than circular in order to properly lock itself into the plastic composition which fills the knob.

As above stated, when the socket is not formed of a single piece of metal, it is made by filling a tube having a comparatively thin wall with a hard alloy, the center of the socket being formed into a shape which is square or rectangular in cross-section and subsequently threaded upon its sides to engage with screw-threads on the corner edges Y of the spindle. as will be hereinafter described.

The hollow door-knob is filled with the plastic composition as above described and the squared end of the socket is forced into the plastic material .so that it will project therein a distance sufficient to cover the squared end portion. The plastic material is then permitted to set and when it is set, the socket is held firmly in place.

In Figs. 3 and 4, I have shown a form of construction by means of which the spindle may be permanently secured by a locking means to the inside of the socket so that the spindle may be screwed into the socket and when it reaches a suitable distance therein, the spindle is locked to the socket by means of a key 12. Screw-threads are provided on the inner Wall of the socket and the outer end of the socket is provided with a cut out circular cavity 13 from which at least four rectangular shaped notches extend in a radial direction. It is obvious that I may increase -the number or" notches as desired. Before the spindle is inserted in the socket to screwv the knob therein, I fit on the spindle as a key a disk 12 having a rectangular opening through its center, the spindle closely litting the said opening. The disk or key 12 is provided around its periphery With projections 15, as many as may be necessary, preferably four in number, each projection being so constructed as to fit a corresponding notch 1st in the end of the socket. When the socket is permanently anchored to the knob the spindle is then screwed to the socket and the disk 12 slid in place, so that the projections 15 Will lit in the notches 1l, the knob and socket is thus permanently fixed to the spindle as it is impossible to turn the same upon its axis independently `of the other. lWhen the knob is in place upon the door, the rose of usual construction effectually conceals from view the locking disk 12.

In the form shown in Fig. 6, the disk or key 14 is so shaped with notches 16 as to fit onto the pins 17 projecting radially from the open end of the socket, and closely lits the spindle in the same manner as described above referring to Figs. 3 and 4.

In Fig. 7, the disk or key 12 fits upon the spindle in the same manner above described referring to Fig. 4i. The projecting lugs 2O on the disk 112 fit into the notches 21 in the outer end of the socket as clearly shown.

Referring to Figs. 8, 9 and 10, I provide longitudinal kerfs or grooves on the inner side of the outer end of the socket arranged at points 900 distant from each other and into these kerfs are fitted the corners 31 of the square shaped disk or key 32. In all other respects is the construction the same as that described with reference to Figs. 1, 3 and d.

In Figs. 11 and 12, I show another form in which pins l0 project radially from the spindle in opposite directions. The inside of the socket has two or more pairs of longitudinal grooves l1 formed opposite to each other. The spindle with pins is inserted in the socket and the ends of the pins Li() engage in the oppositely arranged grooves 41. The socket is then filled with cement and when the cement hardens, the parts are secured in place as the cement fills up the space in the socket and surrounds the pins.

It is of course rWithin the scope of my invention to make the pin project from one side only of the spindle, and provide but one groove on the interior of the socket to receive the projecting pin. So also is it within the scope of my invention to make transverse grooves or serrations on the spindle in which the cement will take hold to secure the spindle in the socket.

The parts shown and described are merely illustrative and the invention is not confined to details except as described in the claims.

Having now described my invention, what I claim as new and desire to secure by Letters Patent, is z-f 1. .A socket provided With a longitudinal. groove, a spindle tting in the socket previded with a pin projecting therefrom, said pin fitting the aforesaid groove, cement filling the socket and surrounding the pin thereby locking the socket and spindle `fitting together.

2. A door knob p1oviclecl.ivith a socket, one end of which is irremovably anchored to a side of the knob and the other end of which is provided with a cavity, a spindle secured to the socket, a key iiXedly mounted upon the spindle and radially projecting therefrom, means for permanently securing the key to the inner surface of the socket and to the spindle.

8. A door knob provided With a .socket permanently anchored at one end to a side of the knob, the socket being provided at the other end with an inclosed cavity, a spindle .secured to the socket, a key mounted upon the spindle and projecting radially therefrom, means on the key co-acting With means on the inside of the socket to permanently secure the spindle to the socket.

In Witness whereof I have hereunto set my hand in the borough of Manhattan, city and State of New York, this irst day of November 1915.

IVILLIAM SANDERSON.

In presence of- ETHEL D. BACON, ISABEL R. RICHARDS.

Copies ei' this patent may be obtained for vc cents each, by addressing the Commissioner of Patents, Washington, D. G. 

